Thread by @hallow_fiend

Ok, now I want witch Yuuji. The itadori family used to be a powerful clan of witches before they were wiped out on suspicion that they were receiving boons from demons. Yuuji survives the purge and is whisked away by his grandfather to the countryside. His heritage isn't kept

secret entirely. Wasuke teaches him the basics and nature magic. But Yuuji grows beyond that and has strange aptitudes for a young witch. His constitution and strength are well beyond abnormal but more than that he's able to see and communicate with spirits.

Wraiths, creatures, curses-all of them whisper to him and he listens. It's a skill that others him from almost all the children in Sendai. They may know nothing of magic, but they can tell Yuuji's different from them. And it means a lonely childhood for the pink-haired boy.

Wasuke suggests that Yuuji should try to find a familiar. But after years of trying, he doesn't have any luck there either. He should be better suited than anyone when it comes to convincing a spirit to make a pact with him, but whenever he broaches the topic whether its with a

a fire imp or a river spirit no matter how well they get along before they suddenly blanch at the idea of binding themselves to him.
After so many attempts, Yuuji's heartbroken, and left wondering if there's something so wrong with his soul that every spirit balks at the idea of

tying themselves to it.
He's well into his teens when his grandfather dies, and now he's beginning to wonder if he should accept his destined loneliness when he feels something warm and soft brushing up against his leg while he's getting a vending machine coffee. He looks down

and is met with the sight of what has to be the prettiest cat in the world. Its silky white tail is curling around Yuuji's leg as it looks up at him with crystalline blue eyes. It looks like a little cloud has taken two pieces of the sky with it down to earth. The illusion of

innocence doesn't last long, though. The little beast is sinking its claws into Yuuji's legs and scampers up the length of his torso. The thing doesn't bolt or waver as Yuuji startles back and drops his coffee. Instead, it nuzzles into the crook of his neck and starts sniffing.

He tries to swat it away, when a lilting voice stops him.
"Wow, you really are promised to him. That's hilarious!"
It sounds like its right in his ear, but there's no one near him, and the cat's corporeal it can't be...
"I can see why he picked you. Likes them a little dumb."

Yuuji whips his head back around to the cat. It licks his nose before he can react to what is quickly becoming clear.
"Likes em kinda cute too I see."
Its mouth doesn't move, but he swears it's leering at him with those squinted blue eyes.
"Who are you?"
"I'm sorry for the

rude introduction, but I don't think you'd have let me check for a seal in my other form." There's a hum and the faint odor of pine and mint when it leaps to the ground and seamlessly assumes the shape of a tall white haired man.
He's dressed simply in a pair of black slacks and

a periwinkle shirt. From behind a pair of smoked crystal glasses, Yuuji can see his eyes remain the same inhuman shade of blue.
A sharp-toothed grin spans his face as he sinks into a low bow before the teen. "So, Sukuna's intended, what do you say about making a pact with me?"

//end
Anyway I just think Kami Gojo would think it'd be fun to mess with ashura Sukuna by attempting to steal his promised bride. Yuuji was bound to Sukuna from birth, but Gojo uses the familiar pact as kind of a back door to tying himself to the witch. He's the only one crazy

enough to tempt the dread god's ire for fun. Cue witch Yuuji having his affections vied for by these insanely powerful beings that have both fallen for him. They both try to oneup each other by bestowing increasingly powerful boons, but Yuuji just wants to be loved as a person 💞

Witch!Yuuji Goyuu+sukuita cont
There’s a chime next to them as the convenience store door slides open to let a small gang of middle schoolers out into the street. The strange snowy-haired man bowing deeply to a confused boy draws a few of the kids' attention away from their sodas

Yuuji quickly pulls the...whatever he is up by his elbow and decides if he's gonna figure out what's going on he's gonna need privacy.
“Can we not do this here?”
The man lets himself be dragged along, practically skipping, just behind the smaller human.
There's a feline curl to

his lips that exposes enough of the top row of his teeth to confirm there are definitely a few fangs.
“Not afraid of children are you, master?”
“Stop that…” Yuuji blanches dropping his arm.“I haven’t agreed to anything.”
"Yet..." the man singsongs.
It's not long before they

arrive back at his apartment. He allows himself a moment to make sure all the wards are in place-it takes a bit longer than it should. His grandfather was always much better at this sort of magic, but after a little fiddling and stumbling through the spell a spiderweb of frosty

blue ripples through the apartment and dims assuring Yuuji they're safe from prying eyes or ears.
He comes back to the living room to find the man sprawled across his couch legs thrown over the armrest. He lets out a low whistle when he sees Yuuji's finally returned.
"You kinda

suck at this whole magic thing don't you?"
Yuuji scowls as he pushes the stranger's feet onto the floor. "I think I manage pretty well."
"I guess you would. It's not like you've had a chance to see what real magic looks like out here."
Yuuji rolls his eyes. "Was that whole offer

thing a ploy just to make fun of me? I don't understand what you were trying to say at all?"
He goes to head for the kitchen to make some tea when a pale hand shoots out to grab his.
"I meant exactly what I said. I want to make a pact with you Itadori Yuuji"
He's waited so long

to hear those words, but now that he's actually hearing them they don't make sense.
He feels like there's some joke he's not in on, and he searches the other's face for some sign of mockery.
"Why?"
"I can teach you things about magic that would take a thousand lifetimes to learn"

"No why me?" Yuuji sinks into the lumpy couch beside him. "Nothing wants to make a pact with me..."
The shapeshifter scoffs again. "Yeah that's just because everything you've asked before was too weak."
"What? You saw me struggle with apprentice level magic. Why would anything be

scared of me?"
"Oh no not you." He chuckles, and Yuuji definitely feels like he should be ofended. "You're perfectly ordinary as far as witches go, but as I mentioned you've found yourself sealed to someone particularly interesting."
Yuuji struggles to remember the exact name he

used for a moment, but then it's like he finds the name engraved into his mind in big burning letters
"...Sukuna?" The lights dim a fraction and the barest whiff of sandalwood and iron passes by his nose. Then there's a hand over his mouth.
"Shhhhhhh...not so loud."

"Geez it's like don't try to spoil the fun already."
"Who is he and what does he want with me?"
"Beats me..Mr. tall dark and gloomy keeps to himself most of the time. He's universally regarded as bad new as you already know." The terrified faces of the hundred spirits Yuuji

aprroached come to mind, and Yuuji feels his throat bob in fear a little. He'd gone to some pretty powerful ones toward the end-volcano spirits, onryos what could sukuna be that would make these things scurry away from him like frightened rats.
"So is that why you're here. You

want to protect me from him."
"Yes and No." He shrugs. "I can't tell you much more without risking something worse than a little lightshow, but if you'll trust me I promise you'll actually have some control in this unfortunate situation you've been born into"
His grandfather had

always warned him that the bond between a witch and a familiar was the most sacred in their culture. It was irrevocable. Spiritual and above all intimate. Yuuji knew from this, and yet he couldn't find much hesitation when it came to accepting this creature's extended hand.

Over their clasped hands their souls materialize as delicate chains. One strand is made up of rounded links of golden amber, the other..well the other is mystifying. At first Yuuji thinks it is simple black glass, but then he sees stars twinkling within. When he brings his hand a

little closer to inspect it it's like looking through a peephole into the heavens Iridescent nebulas, jets of solar vapor, and swirls of galaxies all dance in front of his eyes until he's overwhelmed and forced to surface back to his small Sendai apartment
"I think you understand

why I'm not afraid of him now. Don't you?"
Yuuji just nods his head still dazed.
"Would you do the honors..."
"Uh sure.." Yuuji is praying he doesn't mess this up-he's pretty sure he wants to stay in this being's good graces now.
"With these chains i bind what once was born apart

now with this soul entwined. Be it may as i will it and tie thyself to me."
There's a sputtering hiss and a lock manifests joining the two chains together. Yuuji knows the final step, and it's all in the other's hands. He will have to give Yuuji his true name. Yuuji expects this

to fall apart here. There's no way something as powerful as what he's next to will give up something as precious as its essence. No way. This has to be a joke, but when he looks up from the lock he's met with blue eyes dancing with unabashed excitement. There's no malice at all.

"I, Gojo Satoru, bind thyself to thee."
Yuuji's stunned. He doesn't believe it even when a sapphire key fizzles into existence to turn the lock. Not when the chains burn away and leave their silvery marks on both of their skin. Only when Gojo's large hand ruffles his hair does it

start to feel a little bit like reality He's a little dizzy There's an instantaneous rush of power after the binding and he feels both too big and too small for his body.
Gojo slings an arm over Yuuji's shoulder and brings him in close with a grin.
"But you can call me senpai."

It’s to be expected, but Yuuji passes out shortly after. It’s a testament to Yuuji’s strength that the pact didn’t kill him, but taking that much power in all at once is still too much for the human to handle So Gojo’s first act of service as a familiar is carrying his new master

to bed
He can afford to be a little considerate after how accommodating Yuuji was. Gojo’s glossy black magic dispenses with the little human courtesies-drawing the curtains, changing yuuji into pajamas, banishing any tartar from his teeth It's all so mundane for him, but still

it's charming. So Gojo let's himself indulge in it a little. He let's his human shape fall away and bounds into bed, a silky white cat once again.
Curling into himself on top of Yuuji's chest, he can't remember humans ever being quite this warm. Oh, yes he could get used to this

Well he could’ve.
If a frigid claw hadn’t picked him up by his scruff. He’s held level with four crimson eyes searing through the darkness. The face that contains them is carved with jagged black lines and a furious snarl. Ryomen Sukuna seems to have gotten his message

“I was wondering when you’d finally drop by-” Gojo smirks as he wills himself to elongate into his human form. Sukuna brushes a hand over Yuuji’s face weaving a veil of magic to prevent them from disturbing his sleep.

“You insipid cur!” Sukuna barks.“I ought to filet and broil

you for this!"
Gojo gasps in mock scandal. “Don’t even joke about such a thing, Kuna-chan.”
He holds up his pact silvered wrist and drinks in the horror on Sukuna's face. “How would you ever live with yourself knowing that you’d kill your beloved in the process.”
(TBC 🤡)

Phew i was worried id run out of gas before i was able to get to the sukuita portion but even if it was a sliver I hope this gives you an idea of what the dynamic between him and yuuji will be like
this was my first try with fantasy in awhile and it was fun to write
thank guys🌸